在一个规划良好的停车场中，防撞条和车轮挡是不可缺少的因素，车轮挡不仅可以方便用户正确的停车，也可以达到美观整齐的效果。

一般制作车轮挡的材质有高密度聚乙烯、铝合金、合成橡胶和合成纤维塑料几种，也视用户的需求内填水泥加强车轮挡本身的稳固性，车轮挡因其适用场所缘故，颜色一般为正黄色，也有粘贴反光条或反光片的产品，来达到引人注目的效果。

Wheel chocks (or chocks) are wedges of sturdy material placed closely against a vehicle's wheels to prevent accidental movement. Chocks are placed for safety in addition to setting the brakes. The bottom surface is sometimes coated in rubber to enhance grip with the ground. For ease of removal, a rope may be tied to the chock or a set of two chocks. One edge of the wedge has a concave profile to contour to the wheel and increase the force necessary to overrun the chock. Most commonly, chocks are seen on aircraft and train cars.